Material:Stainless Steel,Clamp diameter:1"(25mm),Clamp strap width:0.7"(18mm).The length of the screws is 0.8"(20mm).The two holes distance is about 2"(50mm).quantity:10 Sets,1 Set is 1 Clamp with 2 screws. Please note:some customers reflect that the size of the pipe cramp is small, actually the size of the pipe cramp smaller little bit is better for fasten the pipe to the wall. When installing the pipe cramp, pls rotate the screw hard to make the screw hole close to the wall so that the pipe cramp can fasten the pipe to the wall better.